#21408B#21408B

#21408B is a dark, vivid blue. Relative luminance 0.059; OKLCH L 39.4% C 0.130 H 264.3°. Best body text is #FFFFFF at 9.67:1 contrast (WCAG AA passes).

Color values

HEX	#21408B
RGB	rgb(33, 64, 139)
HSL	hsl(222, 62%, 34%)
HSV	hsv(222, 76%, 55%)
CMYK	cmyk(76.3%, 54%, 0%, 45.5%)
CIE-LAB	lab(29.04, 16.63, -45.10)
CIE-LCH	lch(29.04, 48.07, 290.24°)
OKLab	oklab(39.42% -0.013 -0.1298)
OKLCH	oklch(39.42% 0.13 264.3)
XYZ	xyz(7.1191, 5.8534, 25.1757)
Luminance	0.0585 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#21408B #8B6C21

analogous

#21758B #21408B #37218B

triadic

#21408B #8B2140 #408B21

tetradic

#21408B #8B2175 #8B6C21 #218B37

square

#21408B #8B2175 #8B6C21 #218B37

split-complementary

#21408B #8B3721 #758B21

monochromatic

#0A1228 #15295A #21408B #2D57BC #5178D6

Accessibility & contrast

On white

9.67

#21408B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.17

#21408B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #21408B

9.67:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##21408B	#FFFFFF	#000000	##FFFFFF
##21408B	1.00	9.67	2.17	9.67
#FFFFFF	9.67	1.00	21.00	1.00
#000000	2.17	21.00	1.00	21.00
##FFFFFF	9.67	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0B4A8E

Deuteranopia (green-blind)

#00408A

Tritanopia (blue-blind)

#00525F

Achromatopsia (no color)

#444444

Design tokens & code

CSS

--color: #21408b;
/* rgb */ color: rgb(33, 64, 139);
/* oklch */ color: oklch(39.4% 0.130 264.3);

Tailwind

colors: {
  custom: {
    50: '#6c74ad',
    500: '#21408b',
    950: '#000000',
  },
}

SCSS

$custom: #21408b;
$custom-light: #6c74ad;
$custom-dark: #000000;

JSON

{
  "hex": "#21408b",
  "rgb": {
    "r": 33,
    "g": 64,
    "b": 139
  },
  "hsl": {
    "h": 222.453,
    "s": 61.628,
    "l": 33.725
  },
  "oklch": {
    "l": 0.39416,
    "c": 0.13047,
    "h": 264.3
  },
  "luminance": 0.05854
}

Semantic roles & 50–950 ramp

primary

#21408B

secondary

#B99A4F

accent

#B543E5

background

#F7F7FA

surface

#EDEDF4

border

#C8C8CE

text

#080810

muted

#7B7B7F

Preview Lab

Preview with #21408B

Body copy rendered with the generated semantic roles for this colour.

Preview Lab → · Contrast checker → · Palette generator →